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Zero-drift Amplifier Achieves Ultra-Low Voltage Noise

Tue, 04/12/2011 - 9:07am
NORWOOD, Mass. -- (BUSINESS WIRE) -- Analog Devices, Inc. (ADI) today introduced the industry’s lowest-noise, zero-drift operational amplifier. The ADA4528 zero-drift op amp is designed for instrumentation and medical applications that require precision over time and temperature without system calibration. The breakthrough design achieves an ultra-low integrated voltage noise of 99 nVp-p over 0.1 Hz - 10 Hz meaning that the ADA4528 delivers a 26 percent lower voltage noise at 40 percent less power consumption than the closest competing amplifiers. This improves system SNR (signal-to-noise ratio) and lowers the noise floor, enabling 24-bit resolution over 150 kHz in A/D converters while improving system accuracy.

The 5.3-nV/rtHz voltage noise density allows designers for the first time to use the zero-drift amplifier in broadband applications, such as piezoelectric transducers and precision data acquisition systems.

* Download data sheet and view product page: http://cts.businesswire.com/ct/CT?id=smartlink&url=http%3A%2F%2Fwww.analog.com%2FADA4528&esheet=6674258&lan=en-US&anchor=www.analog.com%2FADA4528&index=6&md5=d9eae9ba06b8b34f412372d968257d46

* Order samples: http://cts.businesswire.com/ct/CT?id=smartlink&url=http%3A%2F%2Fwww.analog.com%2FADA4528&esheet=6674258&lan=en-US&anchor=www.analog.com%2FADA4528&index=7&md5=fe889679f9bca9f00151c71d50529a18

* Build circuits using the ADA4528 with ADI’s free SPICE macro model tool: http://cts.businesswire.com/ct/CT?id=smartlink&url=http%3A%2F%2Fwww.analog.com%2Fada4528-1_tools_models&esheet=6674258&lan=en-US&anchor=http%3A%2F%2Fwww.analog.com%2Fada4528-1_tools_models&index=8&md5=381289c8e47f8b51b2e2a1425850ad08

* Find other featured products for instrumentation and measurement applications: http://cts.businesswire.com/ct/CT?id=smartlink&url=http%3A%2F%2Finstrumentation.analog.com%2Fen%2Fsegment%2Fim.html&esheet=6674258&lan=en-US&anchor=http%3A%2F%2Finstrumentation.analog.com%2Fen%2Fsegment%2Fim.html&index=9&md5=6b7c18e87a568a1adf46eff429aaf6f8

The ADA4528 zero-drift amplifier offers low offset voltage of 2.5 µV max and the industry’s lowest guaranteed offset-voltage drift of 0.015 µV/°C max. It has a 140 dB gain and a CMRR (common-mode rejection ratio) of 135 dB and a 130 dB PSRR (power-supply rejection ratio), making it well-suited for precision amplification of low-level signals in applications such as position and pressure sensors, strain gages, and medical instrumentation. The ADA4528 is fully specified to operate from a 2.2-V to 5.5-V single-voltage supply over the extended industrial temperature range (-40°C to +125°C) and is available in an 8-lead MSOP (Mini Small Outline Package).

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